Finding the Fourth Proportional to 12,306.50, 18,460.02 and 3,072.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,306.50 : 18,460.02 = 3,072.50 : x
2. Step 2: Convert to fraction form
   12,306.50/18,460.02 = 3,072.50/x
3. Step 3: Cross multiply
   12,306.50x = 18,460.02 × 3,072.50
4. Step 4: Simplify right side
   12,306.50x = 56,718,411.45
5. Step 5: Solve for x
   x = 56,718,411.45/12,306.50
6. Step 6: Final answer
   x = 4,608.82